{"doi":"10.1002/1878-0261.13638","title":"Pharmacological degradation of\n                    <scp>ATR</scp>\n                    induces antiproliferative\n                    <scp>DNA</scp>\n                    replication stress in leukemic cells","abstract":"<jats:p>\n                    Mammalian cells replicate ~ 3 × 10\n                    <jats:sup>9</jats:sup>\n                    base pairs per cell cycle. One of the key molecules that slows down the cell cycle and prevents excessive DNA damage upon DNA replication stress is the checkpoint kinase ataxia‐telangiectasia‐and‐RAD3‐related (ATR). Proteolysis‐targeting‐chimeras (PROTACs) are an innovative pharmacological invention to molecularly dissect, biologically understand, and therapeutically assess catalytic and non‐catalytic functions of enzymes. This work defines the first‐in‐class ATR PROTAC, Abd110/Ramotac‐1. It is derived from the ATR inhibitor VE‐821 and recruits the E3 ubiquitin‐ligase component cereblon to ATR. Abd110 eliminates ATR rapidly in human leukemic cells. This mechanism provokes DNA replication catastrophe and augments anti‐leukemic effects of the clinically used ribonucleotide reductase‐2 inhibitor hydroxyurea. Moreover, Abd110 is more effective than VE‐821 against human primary leukemic cells but spares normal primary immune cells. CRISPR‐Cas9 screens show that ATR is a dependency factor in 116 myeloid and lymphoid leukemia cells. Treatment of wild‐type but not of cereblon knockout cells with Abd110 stalls their proliferation which verifies that ATR elimination is the primary mechanism of Abd110. Altogether, our findings demonstrate specific anti‐leukemic effects of an ATR PROTAC.\n                  </jats:p>","journal":"Molecular Oncology","year":2024,"id":634009,"datarank":0.3958585994422889,"base_score":2.639057329615259,"endowment":2.639057329615259,"self_citation_contribution":0.3958585994422889,"citation_network_contribution":0.0,"self_endowment_contribution":0.3958585994422889,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":13,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":31106,"name":"Ramy Ashry","orcid":"0000-0001-6474-113X","position":1,"is_corresponding":false},{"id":1644093,"name":"Al‐Hassan M. Mustafa","orcid":null,"position":2,"is_corresponding":false},{"id":1644096,"name":"Abdallah M. Alfayomy","orcid":null,"position":3,"is_corresponding":false},{"id":1012566,"name":"Markus P. Radsak","orcid":"0000-0002-3991-5721","position":4,"is_corresponding":false},{"id":1644100,"name":"Yanira Zeyn","orcid":null,"position":5,"is_corresponding":false},{"id":1367076,"name":"Matthias Bros","orcid":"0000-0002-4662-0542","position":6,"is_corresponding":false},{"id":31115,"name":"Wolfgang Sippl","orcid":"0000-0002-5985-9261","position":7,"is_corresponding":false},{"id":31116,"name":"Oliver H. Krämer","orcid":"0000-0003-3973-045X","position":8,"is_corresponding":false},{"id":31107,"name":"Anita G. Kansy","orcid":"0009-0000-1005-6452","position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Pharmacological degradation of\n                    <scp>ATR</scp>\n                    induces antiproliferative\n                    <scp>DNA</scp>\n                    replication stress in leukemic cells","abstract":"<jats:p>\n                    Mammalian cells replicate ~ 3 × 10\n                    <jats:sup>9</jats:sup>\n                    base pairs per cell cycle. One of the key molecules that slows down the cell cycle and prevents excessive DNA damage upon DNA replication stress is the checkpoint kinase ataxia‐telangiectasia‐and‐RAD3‐related (ATR). Proteolysis‐targeting‐chimeras (PROTACs) are an innovative pharmacological invention to molecularly dissect, biologically understand, and therapeutically assess catalytic and non‐catalytic functions of enzymes. This work defines the first‐in‐class ATR PROTAC, Abd110/Ramotac‐1. It is derived from the ATR inhibitor VE‐821 and recruits the E3 ubiquitin‐ligase component cereblon to ATR. Abd110 eliminates ATR rapidly in human leukemic cells. This mechanism provokes DNA replication catastrophe and augments anti‐leukemic effects of the clinically used ribonucleotide reductase‐2 inhibitor hydroxyurea. Moreover, Abd110 is more effective than VE‐821 against human primary leukemic cells but spares normal primary immune cells. CRISPR‐Cas9 screens show that ATR is a dependency factor in 116 myeloid and lymphoid leukemia cells. Treatment of wild‐type but not of cereblon knockout cells with Abd110 stalls their proliferation which verifies that ATR elimination is the primary mechanism of Abd110. Altogether, our findings demonstrate specific anti‐leukemic effects of an ATR PROTAC.\n                  </jats:p>","is_dataset_classified":null,"base_score":2.639057329615259,"endowment":2.639057329615259,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"38520049","pmcid":"PMC11306515","openalex_id":"https://openalex.org/W4393116348","authors":[],"funders":[{"funder_name":"Deutsche Forschungsgemeinschaft","grant_id":"SFB1361","title":null},{"funder_name":"Deutsche Forschungsgemeinschaft","grant_id":"SFB1292TP21N","title":null},{"funder_name":"Deutsche Forschungsgemeinschaft","grant_id":"KR2291","title":null},{"funder_name":"Deutsche Forschungsgemeinschaft","grant_id":"SI868/22‐1","title":null},{"funder_name":"Deutsche Forschungsgemeinschaft","grant_id":"SI868/22-1","title":null},{"funder_name":"Deutsche Forschungsgemeinschaft","grant_id":"unidentified","title":"unidentified"},{"funder_name":"Brigitte und Dr. Konstanze Wegener-Stiftung","grant_id":"","title":null},{"funder_name":"German Academic Exchange Service","grant_id":"","title":null},{"funder_name":"Walter Schulz-Stiftung","grant_id":"","title":null},{"funder_name":"German Academic Exchange service","grant_id":"","title":null},{"funder_name":"German Academic Exchange service","grant_id":"","title":null},{"funder_name":"Walter Schulz-Stiftung","grant_id":"","title":null},{"funder_name":"Brigitte und Dr. Konstanze Wegener-Stiftung","grant_id":"","title":null}],"total_grants":13,"fwci":2.1003,"citation_percentile":0.8718469,"influential_citations":0,"citation_trend":[{"year":2025,"count":5},{"year":2026,"count":8}],"oa_status":"gold","license":"cc-by","oa_locations":[{"url":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/1878-0261.13638","host_type":"journal"},{"url":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/1878-0261.13638","host_type":"publisher"},{"url":"https://febs.onlinelibrary.wiley.com/doi/pdf/10.1002/1878-0261.13638","host_type":"publisher"},{"url":"https://doi.org/10.1002/1878-0261.13638","host_type":"journal"},{"url":"https://pubmed.ncbi.nlm.nih.gov/38520049","host_type":"repository"},{"url":"https://www.ncbi.nlm.nih.gov/pmc/articles/11306515","host_type":"repository"},{"url":"https://doaj.org/article/3c603aa7f4ed49c783038eaa1696cb4c","host_type":"repository"},{"url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC11306515/pdf/MOL2-18-1958.pdf","host_type":"repository"},{"url":"https://europepmc.org/articles/PMC11306515","host_type":"Europe_PMC"},{"url":"https://europepmc.org/articles/PMC11306515?pdf=render","host_type":"Europe_PMC"},{"url":"https://dx.doi.org/10.25673/117344","host_type":""},{"url":"https://dx.doi.org/10.25358/openscience-10448","host_type":""},{"url":"http://dx.doi.org/10.1002/1878-0261.13638","host_type":""},{"url":"https://doi.org/10.25358/openscience-10448","host_type":""},{"url":"https://openscience.ub.uni-mainz.de/handle/20.500.12030/10466","host_type":""},{"url":"https://opendata.uni-halle.de//handle/1981185920/119303","host_type":""},{"url":"http://dx.doi.org/10.25673/117344","host_type":""},{"url":"https://doi.org/https://doi.org/20.500.12030/10466","host_type":""},{"url":"https://doi.org/https://doi.org/10.25358/openscience-10448","host_type":""},{"url":"https://doi.org/https://doi.org/10.25673/117344","host_type":""}],"fields_of_study":["Protein Degradation and Inhibitors","Histone Deacetylase Inhibitors Research","Ubiquitin and proteasome pathways","Humans","Ataxia Telangiectasia Mutated Proteins","DNA Replication","Cell Proliferation","Leukemia","Cell Line, Tumor","Proteolysis","Ubiquitin-Protein Ligases","Adaptor Proteins, Signal Transducing","Hydroxyurea","DNA Damage"],"mesh_terms":["DNA Damage","DNA Replication","Humans","Hydroxyurea","Leukemia","Ubiquitin-Protein Ligases","Cell Line, Tumor","Adaptor Proteins, Signal Transducing","Cell Proliferation","Proteolysis","Ataxia Telangiectasia Mutated Proteins"],"keywords":["Ribonucleotide reductase","Cell biology","DNA damage","Cereblon","Cell cycle","Biology","Ubiquitin ligase","Chemistry","Molecular biology","Ubiquitin","Cell","Biochemistry","DNA","Protein subunit","Leukemia","Atr","Dna Replication Stress","Protac","DNA Replication","570","Ubiquitin-Protein Ligases","610 Medizin","610","Ataxia Telangiectasia Mutated Proteins","info:eu-repo/classification/ddc/615","Cell Line, Tumor","610 Medical sciences","615","Humans","Hydroxyurea","RC254-282","Cell Proliferation","Adaptor Proteins, Signal Transducing","ddc:610","Neoplasms. 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